Structure Of The Machine Data Directory - Siemens SIMATIC S5 Manual

Standard Function Block FB165
Enter SYSID (BA = 24)
The system identification SYSI D is stored in data block DBx from data word DWn. The system
identification is limited to three data words when writing to the IP247.
DW n+l
DW n+2
If the same data block is used for reading the SYSID from the module and for writing the SYSID
to the module, then the value in the parameter QANF must be increased by six (writing to the
I P247) compared with the value in the parameter ZANF (reading from the IP247).

Structure of the Machine Data Directory

6.3.8.4
The machine data directory can be read from the IP247 with
BA = 64
The machine data directory has a constant length of six data words. if the machine data record
is missing
for an axis, the data words have the value zero.
The machine data directory in data block DBx from data word DWn has the following structure:
000,001
DW n
+00070
DW
DW n+2 000,005
DW n+3 +00070
DW n+4 000,007
DW n+5 +00070
6 - 4 4
Recommended
data format
KY DR n: module number [0...99]
KY
000,000
DR n+l: slot number [0.,,255]
000,000 KY
DR n+2: page number[O.,,252]
Recommended
data format
KY
KF Length in words
KY
KF Length in words
KY
KF Length in words